The treatment of cough needs to address the cause of the treatment at the same time, the appropriate use of cough suppressants, including central cough suppressants and peripheral cough suppressants, the specific effect varies from person to person. The central cough suppressant is to inhibit the cough center in the medulla oblongata, directly inhibit the cough reflex, and play a cough suppressant effect. Codeine phosphate, for example, is a powerful and rapid cough suppressant, with adverse effects including respiratory depression, addiction, constipation, and allergy. Codeine allergy, lactating women and children under 12 years old are prohibited. Peripheral cough suppressants mainly inhibit the reaction arc that triggers cough, including receptors, afferent nerves, efferent nerves, effectors and so on. Commonly used drugs include narkotine hydrochloride, which can inhibit the pulmonary stretching reflex, and has the effect of excitation of the respiratory center, adverse reactions include nausea, headache, drowsiness, etc., allergy, children, pregnant women, lactating women are prohibited. For the treatment of cough, it is recommended to consult a doctor in time to find the cause of cough, and medication should be carried out under the guidance of a professional doctor.